这篇来自Science的研究文章发现了植物根系微生物定植的机制，重点是内皮细胞屏障缺陷导致局部谷氨酰胺泄漏如何驱动细菌在根表面的空间分布。研究人员发现，内皮细胞屏障的完整性，特别是凯氏带（Casparian Strip），对于限制谷氨酰胺等营养物质泄漏到根际至关重要。当该屏障受损时，泄漏出的谷氨酰胺作为主要的化学引诱剂和营养来源，能够强烈吸引细菌，并促进它们在特定区域（如侧根萌发部位和屏障缺陷区）的过度增殖。最终，这种对细菌群落的调控对于限制慢性免疫刺激和维持植物健康至关重要。References: Tsai H H, Tang Y, Jiang L, et al. Localized glutamine leakage drives the spatial structure of root microbial colonization[J]. Science, 2025, 390(6768): eadu4235.
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